Document YGBLJpeRa2jDEjL7MqLRzwZgn

Way 25, 1970 Otia E. Fancher, Ph.D. Director Industrial Bio-Teat Laboratories, 1810 Frontage Road Northbrook, Illinois 60062 Inc. Dear Otia: This letter will authorize you to proceed with a atudy with the leghorn chickens with the Aroclor 1242, lot number AL-55* This should duplicate the atudy you did previously with Aroclor 1242, lot number AK-255, except in this instance you have suggested using dietary levels of 2, 4, and 8 ppm. This sample of Aroclor represents our current regu lar production which involves some clean-up insti tuted since the previous sample was made available to you. We would hope that we might find a higher "no effect" level with this sample as compared to the previous work* As soon as suitable reference standards are available, the research laboratory in St. Louis will more care fully characterize the two samples in terms of possi ble minute amounts of contaminants. Best personal regards. Sincerely, 5PW:ju /- Blmer P. Wheeler Manager, Environmental Health P L A IN T IF F S EXHIBIT ^((fl STR 022806 0 j v py